Oil lamp



FIG. 1 is a perspective view of our design;

FIG. 2 is a front elevation view of the embodiment of FIG. 1, the other sides and rear being the same;

FIG. 3 is a top plan view of the embodiment of FIG. 1;

FIG. 4 is a bottom plan view of the embodiment of FIG. 1;

FIG. 5 is a perspective view of a second embodiment of our design;

FIG. 6 is a front elevation view of the embodiment of FIG. 5, the other sides and rear being the same;

FIG. 7 is a top plan view of the embodiment of FIG. 5; and,

FIG. 8 is a bottom plan view of the embodiment of FIG. 5.

The area inside the dashed lines of FIGS. 4, 8, forms no part of the claimed design. 

The ornamental design for an oil lamp, as shown and described. 